Mobile telephone set



FIG. 1 is a front, right side and bottom perspective view of a mobile telephone set showing my new design,

FIG. 2 is a bottom plan view thereof,

FIG. 3 is a top plan view thereof,

FIG. 4 is a front elevational view thereof,

FIG. 5 is a rear elevational view thereof,

FIG. 6 is a left side elevational view thereof, and

FIG. 7 is a front, right side and bottom perspective view thereof showing handset separated from stand. 

The ornamental design for a mobile telephone set, as shown and described. 